Spring rate advice Options

[BlueRidge914]

I’d be grateful for some spring rate advice for my vintage race 914.
It’s a narrow body 2L six, 205/50 tires all around. Front torsion bars with adjustable sway bar. Rear is Bilstein Sports with adjustable spring perches, and a fixed sway bar.
My personal preference leans to a relatively softer spring all around.
Any recommendations for both torsion bar size and rear spring rate?
Thanks!
Gavin
VARAC #58

[Thorshammer]

There’s a bit more to consider when choosing spring rates.

What bushings/bearings
Are the rear trailing arms reinforced properly (and that’s not by wrapping them in 10+ lbs of perforated steel)
The anti roll bars: what are they riding in, and how well do they rotate and is their geometry reasonable
Are the shocks standard off the shelf… remember, if the rebound isn’t matched to the spring rate, there can be a some negative heave effect. So, in some cases, if you can’t control the heave, due to an insignificant damper, choosing a spring rate that matches the damper, will yield better performance overall

However:

21/225 or 21/250 works nicely IMO